Machine for testing springs



Oct. 19 1926.

F. TCPFL IACHINE FOR TESTING SPRINGS Filed Nov. '4, 1925 a Sheets-Sheet 1 j bzvenlor Oct. 19,1926. 1,604,089

F. TOPFL MACHINE FOR TESTING SPRINGS Filed Nov. 4, 1925 3 Sheets-Sheet 2 37 In venioz'.

Oct 19,1926. 1,604,089

' F. TOPFL ucumn FOB 'rss'rmo sra'iuas Filed Nov. 4. 1925 3 Shuts-Sheet s vezzloz' Passed a. 19, 926.

' UNIT-ED STATES. PATENT oFF cs.

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Application fled. Io veniber 4, 1936, Serial No. 36,763, and in Germany August 80, 1924.

M invention relates to improvements in ,m es for testing springs and relates articularly to springs used or vehicles 0 all According to my invention the I spring is set in vibration by impact,'the fallin weight producing this oscillation partafiiglg in it by means of coupling. Thus the spring is tested under the conditions in which it is strained in actual use, as in the.

lo action of springs for automobiles and other swinging in connection with the whole mass of the carriage-body. For the. purpose of explaining the invention an example embodying the same has 18 been shown in the accompanying drawings.

In said drawings, Fig. 1, and 2,- are vertical sections.

Fig. 3, is a side view. Fig. 4 is a plan view. :0 Fig. 5 is a horizontal cross section.

The spring to be. tested 1, is placed between the adjustable trestles 2 on the bed 3 and connected by means of the 'aws 4 and the. bolts 5 with an anvil 6 gui ed between the is vertical pillars Tin such a manner as to be able of partaking in the oscillations of the zfirings. Two snap-bolts are provided on.

y e' anvil opfposite eachothenbearing bows by means 0 which they can be withdrawn I with the help of the bent levers 10. The bolts engage n the exchangeable head 11 of the hammer falling weilght 12, which is also guided along the pi ars. The bent levers which are borne by the hammer or a! fallin weight are connected by rods,

rovi ed with arms 14 to a socket 15 whichis -keptin place by the bolt 16. This latter has a bevelled head 17 over which may glide a air-of tongs 13 which are guided in the as p are! by means ota slide The to are attached to a rope 19 passing round e drum 20 which is put in motion by the axlustable bevelled driving gear 21.. A 'motor puts the-axle of the adjustable driving 26 enga one or the wheels 2? the ad coup are 8 connected by means of axle of a motor-magnet 80.

oneco y while the other is Q closing contacts 44v provided '-on onthe sli the bevelled wheels the same thread so that when the axle turns inone direction .or other releasing lever 18' carried by the tongs 18 knock against a bolt 31 which by means of a bent lever 32 moves the lever 33 to which i is attached a rod 34 which sets the counter 35 going The axle 25 sets a vertical axle 36 in motion which by means of the bevelled wheels 37 sets the two drums38 in rotary motion so that a sheet of paper 39 is passed pulleys 40 from one drum them, until in their highest position the tongs open, 'bycontact of lever 18 with pin 31, allowing the fallin weight to drop with its impact-face 11 w ich 18 made of rubbef or hard wood'on the anvil connected with the spring thus causing it 'to oscillate the oscillations being marked by the pens or. other recording'means. The hammer or falling. insight is con led'to the anvil by means of the snap-b0 ta .8, the hammer or falling weight by gravital and rebounding movements thus partaking in the oscillations. When the tongs go down, they engage the head '17 so that when it ges up it takes theialling weight with it. at before that h? ens the socket 15 is raised and '-mean so e bent levers 10 1:1 be- 8 are withb hindthe bows '9 the'snap-bolts drawn from the falling weight, thus disconnecting the coupling between the anvil and wei ht and allowing hthe latter to be taken up y the tongs. e electric current for the motor-brake-magnet which couples the ad ustable driving gti can be automaticall by means of'the adjustable the rod 43 2y a coasting contact provided anden The hammer or falling weight can be fixed in its highest 'tion by means of a clutch pin or stop 4 in order to prevent it from falling down, while, a spring is. I 1 inserted for test. to withdraw the clutch. I

While in the invention referonce has been made to a particular exam le embodying the. same-I wish it to be un erstood that my invention is not to theeonstrnction shown in' the drawuig, and that various maybe made mthe A hand lever 47 is In general arrangement dftlie ap aratus andthe construction of its parts withm the spirit of the appended claims and without departing from the invention.

claim:

1. A machine for testing springs comprising means for su porting a spring to be tested, a falling weight operative by impact on the s ring to set the spring into oscillation, an means for constantly opposing the resistance of the weight to the oscillations of the spring during the oscillation period of the latter. r

2. A machine for testing springs comprising means. for en porting the ends of a spring, an anvil a apted to be fastened to the spring, a hammer for delivering a blow to the anvil for setting the spring into oscillation, and .means for couplin hammer to the anvil during the oscil ation period.

3. A machine for testing springs com prising means for sugiporting a spring, an anvil adapted to he astened to the spring, a hammer for delivering a blow to the 'anvil to set the spring into oscillation, coupling means for connect' the hammer with the anvil during the perlod of oscillation, and hammer raising and lowering means provided with an automatic gripper to engage a part of said couplingmeans and operative on a lifting movement of the hammer thereby to release said coupling means.

4. A machine for testing springs comrising means for supporting a'spring, a

rop weight for setting the spring into oscillation, a lifting device for raisin the weight, and a recorder responsive to t e oscillations of the spring and adjustable by said lifting device. i.

5. A machine for testing springs comsrising means for supporting a spring, a

rop hammer for setting the spring. into oscillation, a liftin device for ralsing the hammer, gearing ior operating said device, a marking device movable with the spring inits oscillations, a coacting movably. mounted. recording strip, and means for 1mparting;motion to said strip from said dl'1Ve gearing during the oscillating period of the sprin prising-means for supporting 5.,A macfiine for testing springs comprising means for supportmg a spring at its ends, a movable anvil adapted to besecured to the spring intermediate its ends, a drop hammer for coaction with the anvil to" cause the spring to oscillate, and means for indicating lagmk chm f ma 'e.or test sp' commg 53%.]. of

- a spring, a movable anvil adapted to be seured tathe spring centre-Hy of its adrophammerforooactionwiththean the h the extent of the spring oscil:

prising means for supporting t e ends of a spring, a movable anvil adapted to be secured to the spring centrally of its length, a drop hammer for contactwith the anvil to cause the spring to oscillate, sprin actuated coupling means for automatically coupling the hammer to the anvil at the impact moment, means for indicating the spring vibrations and means for raising and lowering the hammer, said means being operative for releasing said coupling on av ammer lifting movement.

A machine for testing s rings comprising meansfor supporting e ends of a spring, a movable anvil adapted to basecured to the spring centrally of the latter a drophammer for ooaction with the anvil to cause the spring to oscillate,means for coupling the hammer to the anvil for oscillating movements therewith and with the spring following the impact. moment, and means for raising and lowering the hammer, said means including connections for releasing the coup g at the beginning of the hammer lifting movement.

10. A, machine for testing springs comprising means for su porting the ends of a spring, an anvil for acking the spring intermediate' of its length, a drop hammer coacting with the anvil for setting the spring into oscillation, interconnecting means for causing the spring, anvil and hammer to oscillate in unison following the hammer impact, indicating means-for indicatlng the spring oscillations, and hammer raising and lowering mechanism including means for releasmg the hammer for upward move- "ment.

11. A machine for testing s rings.comprising means for supporting he" ends of a spring, a movable anvil adapted to be secured to the intermediate portion of the s ring, a drop hammer for coaction with t e anvil to cause the 5 ring to oscillate, latch means on the anvil, coacting latch means on the anvil and hammer being automatically enga eable to couple the same togather on the own' stroke of the hammer, hammer raising and lowering mechanism, and engaging means between the same and the hammer, operative on the upward movement of said raising and lowering means to disengagethe latch means onthe hammer from the latch means on the anvil and to' couple said hammer to said raising and" .oom

a spring, a drop hammer 'for delivering a blow to the spring to set the spring into oscillation, and means for indicating the extent of the oscillations. v

13. A machine for testing springs comprising means for supporting the ends of a spring, a, drop hammer operated by impact to set the spring into'osoillation, means for coupling the hammer to the spin during the oscillating movements of the atter, and means for indicating the extent of the oscillations.

In testimony whereof I 0.15: my signa ture.

FRANZ TOPFL.

for coupling the hammer to the sprin' during the oscillating movements of the atter, l0

and means for indicating the extent of the oscillations.

In testimony whereof I aflix my signa ture.

FRANZ TOPFL.

Certificate of Correction. I It is hereby certified that in Letters Patent No. 1,604,089, granted October 19,

1926, upon the application of Franz Top ii, of Dusseldorf Obercassel, Germany, for

' irin erioi a ears re u an improvement in Machines for Testrnt Sprmgs an pp ate 0 correction as follows: In the heudinfiutgugt 30 1924, read Octaber 30, 1924; and

filing application in Germany for tion th d Letters Patent should be read with this correc that e iionform to the record of the case in the Patent Office.

and sealed this 21st day of December, A. D. 1926.

same ma Signed e printe specification, line 5,

therein that the M. J. MOORE, Acting Umrrviaeiomr of Patents.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,604,089, granted October 19. 1926, upon the application of Franz Topl'l, of Dusseldorf-Obercassel, Germany, for an improvement in Machines for Testi n Springs, an error appears 1' uirin correction as follows: In the licadin to 51: printed specification, line 5, ate 0 filing application in Germany for gust 30, 1924, read October 30, 1924; and that the said Letters Patent siiould be read with this correction therein that the same ma conform to the record of the case in the Patent Oflioe.

Signe and sealed this 21st day of December, A. D. 1926.

' M. J. MOORE,

Aotmg Oomm/wawner of Patents. 

